Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Yuichiro Kumamoto"'
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract We examined the spatial variations in 226Ra and 228Ra (activities) concentrations from the surface to a depth of 830 m in the Indian and Southern Oceans from December 2019 to January 2020. 226Ra concentrations at the surface increased sharpl
Externí odkaz:
https://doaj.org/article/21d856ed92604a5c8ce7006c0f6c1f70
Radiocaesium derived from the Fukushima Dai-ichi Nuclear Power Plant (FNPP1) accident was observed across a wide area of the North Pacific, not only in surface seawater, but also in the ocean interior. In this presentation, we summarized the time sca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::503eb0d42c46c3aa9426e556d443171b
https://doi.org/10.5194/egusphere-egu22-9022
https://doi.org/10.5194/egusphere-egu22-9022
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 325:263-270
Vertical profiles of radiocesium (134Cs and 137Cs) were measured in the western subarctic area of the North Pacific in 2017. The highest concentration of 134Cs, which was derived from the accident of the Fukushima Dai-ichi Nuclear Power Plant in 2011
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e6514e60625a99d1d6d6690c9398727
https://doi.org/10.1007/s10967-020-07203-8
https://doi.org/10.1007/s10967-020-07203-8
Autor:
Hyoe Takata, Yuichiro Kumamoto
Publikováno v:
Behavior of Radionuclides in the Environment III ISBN: 9789811667985
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::947e3c7f1035d80f64a25f54f0697a26
https://doi.org/10.1007/978-981-16-6799-2_12
https://doi.org/10.1007/978-981-16-6799-2_12
We examined the spatial variations in 226Ra and 228Ra concentrations from the surface to a depth of 830 m in the Indian and Southern Oceans during December 2019–January 2020. Notably, 226Ra concentrations at the surface increased sharply from 30°S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4a1969d99dc289a895ad14c917a889f
https://doi.org/10.21203/rs.3.rs-882724/v1
https://doi.org/10.21203/rs.3.rs-882724/v1
Autor:
Yuichiro Kumamoto, Michio Aoyama, Yasunori Hamajima, Mutsuo Inoue, Shigeto Nishino, Takashi Kikuchi, Akihiko Murata, Kazutoshi Sato
Publikováno v:
Journal of Environmental Radioactivity. :106949
We measured dissolved radiocesium (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd7c37b60b39a9403fc3d82fb7eea4ee
https://doi.org/10.1016/j.jenvrad.2022.106949
https://doi.org/10.1016/j.jenvrad.2022.106949
Autor:
Masayo Minami, Yuichiro Kumamoto, Takafumi Aramaki, Yoko Saito-Kokubu, Hiroko Handa, Hiroshi A. Takahashi, S Itoh
Publikováno v:
Radiocarbon. 61:1879-1887
We studied a suitable procedure for preparing of water samples used in radiocarbon intercomparisons involving dissolved inorganic carbon (DIC). The water samples must have inter-batch consistency and stable 14C concentrations and no sterilizing agent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95c0b067cb75aa164009aeca3fe76736
https://doi.org/10.1017/rdc.2019.104
https://doi.org/10.1017/rdc.2019.104
Autor:
Yuichiro Kumamoto, Shigeto Nishino, Akihiko Murata, Takashi Kikuchi, Yasunori Hamajima, Michio Aoyama
Publikováno v:
Polar Science. 21:228-232
We measured dissolved radiocesium (134Cs and 137Cs) in seawater collected in the western subarctic area of the North Pacific Ocean, Bering Sea, and Arctic Ocean in 2015 and 2017. The radiocesium released from the accident of the Fukushima Dai-ichi nu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3a138e8f2997bcb5c624a6ae4bba3b2
http://id.nii.ac.jp/1291/00015830/
http://id.nii.ac.jp/1291/00015830/
Autor:
Yuichiro Kumamoto, Takeyasu Yamagata, Hisao Nagai, Shigeto Nishino, A. Kudo, Hiroyuki Matsuzaki
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 455:305-310
129I concentrations were measured in surface waters and for two depth profiles in the Chukchi Borderland (74.5°N 162.0°W) and the southern Canada Basin (72.5°N 155.4°W) during the R/V Mirai cruises in 2014 and 2015. The 129I concentrations in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d9103fe70c133d40db7ceb750fd9f68
https://doi.org/10.1016/j.nimb.2019.01.036
https://doi.org/10.1016/j.nimb.2019.01.036
Publikováno v:
Geophysical Research Letters. 46:833-841
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7fdc35d495c3d03f4def80fed09ea26
https://doi.org/10.1029/2018gl080604
https://doi.org/10.1029/2018gl080604